Azimuthally polarized terahertz radiation generation using radially polarized laser pulse in magnetized plasma
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866917490010882048 |
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| author | Aggarwal, Shivani Mishra, Dinkar Singh, Saumya Kumar, Bhupesh Jha, Pallavi |
| author_facet | Aggarwal, Shivani Mishra, Dinkar Singh, Saumya Kumar, Bhupesh Jha, Pallavi |
| contents | An analytical formulation of a radially polarized laser pulse propagating in a homogeneous, magnetized plasma is presented using Lorentz force, continuity and Maxwells equations. Perturbation technique and quasi-static approximation (QSA) have been used to study the generated fields in nonlinear regime. The generated slow, oscillating, transverse electric and magnetic fields having equal amplitude, constitute a radiation field having frequency in the terahertz (THz) range. Particle-in-cell (PIC) simulation code FBPIC is used to validate analytical findings. Simulation studies also show that the generated THz radiation field propagates beyond the plasma boundary, indicating coherent electromagnetic radiation emission. Furthermore, the field amplitude scales nonlinearly with plasma density and increases linearly with external magnetic field strength, highlighting the role of these parameters in controlling radiation amplitude. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_08438 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Azimuthally polarized terahertz radiation generation using radially polarized laser pulse in magnetized plasma Aggarwal, Shivani Mishra, Dinkar Singh, Saumya Kumar, Bhupesh Jha, Pallavi Plasma Physics Computational Physics Optics An analytical formulation of a radially polarized laser pulse propagating in a homogeneous, magnetized plasma is presented using Lorentz force, continuity and Maxwells equations. Perturbation technique and quasi-static approximation (QSA) have been used to study the generated fields in nonlinear regime. The generated slow, oscillating, transverse electric and magnetic fields having equal amplitude, constitute a radiation field having frequency in the terahertz (THz) range. Particle-in-cell (PIC) simulation code FBPIC is used to validate analytical findings. Simulation studies also show that the generated THz radiation field propagates beyond the plasma boundary, indicating coherent electromagnetic radiation emission. Furthermore, the field amplitude scales nonlinearly with plasma density and increases linearly with external magnetic field strength, highlighting the role of these parameters in controlling radiation amplitude. |
| title | Azimuthally polarized terahertz radiation generation using radially polarized laser pulse in magnetized plasma |
| topic | Plasma Physics Computational Physics Optics |
| url | https://arxiv.org/abs/2602.08438 |